The deal has been blocked by demands from Emirates - the biggest customer for the twin-deck jet, with 100 of them in service and a further 42 on order - that the pan-European plane-maker continues making the A380 for at least another decade. Deliveries will start in 2022 and Emirates is yet to decide between engines offered by General Electric and Rolls-Royce.

Azerbaijan Airlines has ordered five Boeing 787-8 aircraft and also chose to purchase two large freighters. The order has a theoretical value of more than $1.3bn at list prices. However, airlines and manufacturers typically negotiate discounts on such deals.

The order takes 777 net orders this year to 57, including 37 for the current-generation 777. The only major deal announced so far came Sunday, when long-haul carrier Emirates purchased 40 Boeing 787-10 Dreamliners in a $15.1 billion deal.